Odyssey Marine Exploration's three largest insider shareholders as of April 25, 2026 are Gallardo Juan Antonio Carlos Cortina (TenPercentOwner, 3.93Mn shares), Mark B Justh (Director, 859.21K shares), Mark Gordon (Chief Executive Officer, 632.24K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Gallardo Juan Antonio Carlos Cortina | - | 0 | 3,931,466 | 13 Aug, 2025 |
| Mark B Justh | - | 859,207 | 0 | 03 Jul, 2025 |
| Mark Gordon | Chief Executive Officer | 632,235 | 0 | 23 Mar, 2026 |
| John D Jr Longley | President Coo | 150,313 | 0 | 15 Oct, 2025 |
| Todd E Siegel | - | 146,377 | 0 | 22 Apr, 2026 |
| Jay Nudi | Pao/Treasurer | 97,826 | 0 | 02 May, 2022 |
| Jon D Sawyer | - | 79,580 | 0 | 08 Dec, 2025 |
| Jon D Sawyer | - | 79,580 | 0 | 08 Dec, 2025 |
| Laura Lionetti Barton | Chief Business Officer | 77,755 | 0 | 17 Mar, 2022 |
| Larissa Tiffany Pommeraud | - | 72,624 | 0 | 21 Apr, 2026 |
| James S Pignatelli | - | 64,348 | 0 | 18 Jan, 2023 |
| Larissa Tiffany Pommeraud | - | 48,643 | 0 | 09 Mar, 2026 |
| Laura Lionetti Barton | Chief Business Officer | 0 | 7,500 | 16 Jun, 2022 |
| Laura Lionetti Barton | Chief Business Officer | 0 | 5,000 | 19 Aug, 2021 |
| Christopher Emlyn Jones | Chief Financial Officer | 1,997 | 0 | 17 Mar, 2022 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 20 Apr, 2026 | Todd E Siegel | Common Stock | A | 31,475 | $0.00 | 146,377 | D | A |
| 20 Apr, 2026 | Todd E Siegel | Common Stock | A | 31,475 | $0.00 | 146,377 | D | A |
| 20 Apr, 2026 | Larissa Tiffany Pommeraud | Common Stock | A | 23,981 | $0.00 | 72,624 | D | A |
| 20 Apr, 2026 | Larissa Tiffany Pommeraud | Common Stock | A | 23,981 | $0.00 | 72,624 | D | A |
| 23 Mar, 2026 | Mark Gordon | Common Stock | A | 150,000 | $0.41 | 632,235 | D | M |
| 23 Mar, 2026 | Mark Gordon | Stock Option(Right to Buy) | D | 150,000 | $0.00 | 0 | D | M |
| 08 Mar, 2026 | Larissa Tiffany Pommeraud | Common Stock | A | 6,803 | $0.00 | 48,643 | D | A |
| 06 Feb, 2026 | Larissa Tiffany Pommeraud | Common Stock | A | 5,291 | $0.00 | 41,840 | D | A |
| 06 Jan, 2026 | Larissa Tiffany Pommeraud | Common Stock | A | 10,204 | $0.00 | 36,549 | D | A |
| 05 Dec, 2025 | Jon D Sawyer | Common Stock | A | 4,854 | $0.00 | 79,580 | D | A |
| 05 Dec, 2025 | Larissa Tiffany Pommeraud | Common Stock | A | 4,854 | $0.00 | 26,345 | D | A |
| 02 Dec, 2025 | Larissa Tiffany Pommeraud | Restricted Stock Unit (RSU) | A | 20,000 | $0.00 | 20,000 | D | A |
| 02 Dec, 2025 | Mark B Justh | Restricted Stock Unit (RSU) | A | 20,000 | $0.00 | 20,000 | D | A |
| 02 Dec, 2025 | Mark Gordon | Restricted Stock Unit (RSU) | A | 25,000 | $0.00 | 25,000 | D | A |
| 02 Dec, 2025 | John D Jr Longley | Restricted Stock Unit (RSU) | A | 25,000 | $0.00 | 25,000 | D | A |
| 02 Dec, 2025 | Jon D Sawyer | Restricted Stock Unit (RSU) | A | 20,000 | $0.00 | 20,000 | D | A |
| 02 Dec, 2025 | John D Jr Longley | Stock Option(Right to Buy) | A | 100,000 | $0.00 | 100,000 | D | A |
| 02 Dec, 2025 | Larissa Tiffany Pommeraud | Stock Option (Right to Buy) | A | 30,000 | $0.00 | 30,000 | D | A |
| 02 Dec, 2025 | Jon D Sawyer | Stock Option (Right to Buy) | A | 30,000 | $0.00 | 30,000 | D | A |
| 02 Dec, 2025 | Mark Gordon | Stock Option(Right to Buy) | A | 100,000 | $0.00 | 100,000 | D | A |